| Titre : |
Simulating natural sunlight |
| Type de document : |
texte imprimé |
| Auteurs : |
Matt McGreer, Auteur ; Jamie Chesler, Auteur |
| Année de publication : |
2008 |
| Article en page(s) : |
p. 28-30 |
| Langues : |
Anglais (eng) |
| Catégories : |
Analyse spectrale
Essais accélérés (technologie)
Essais accélérés (technologie) -- Appareils et matériels
Filtres
Rayonnement solaire
Rayonnement ultraviolet
Simulation, Méthode de
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
The author provides an insight into filtering technology breakthroughs which replicate natural sunlight.
Due to the need for more rapid evaluations and tighter control of test conditions, many plastics engineers turn to accelerated testing devices with artificial light sources over outdoor exposure to test the resistance of materials to weathering. While the novice weathering experimenter in a polymer-testing laboratory might only be concerned with the quantity of light energy deposited on their specimens, it is the 'quality' of the light source (when compared with natural sunlight) that determines the potential correlation with natural, outdoor exposures. In this paper, spectral power distribution graphs representing both full spectrum and short wavelenght UV ranges will be discussed. This data will highlight new break-throughs in filtering technology that now replicate natural sunlight in the short wavelength UV more closely than ever before in commercially available xenon-arc weathering instruments. |
| Note de contenu : |
- Defining solar radiation
- History of artificial weathering devices
- Xenon arc sources
- GRAPHICS : 1. Spectral power distribution of Miami peak sunlight at site latitude - 2. Fluorescent UV vs natural sunlight - 3. Spectral power distribution of Xenon arc lamps with varous filter combinations (irradiance normalised to 1,70W/(m^2 6 nm) at 560 nm - 4. Right light filter system vs sunlight |
| En ligne : |
https://drive.google.com/file/d/1XSgz8g078jUbeb0XbMxOGHJ6rsE_UXJ3/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27615 |
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 198, N° 4528 (09/2008) . - p. 28-30
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